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A car has a kinetic energy of 2000 J. What will be its kinetic energy if its speed is doubled? |
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Answer» If speed is increases, the KINETIC energy is also increases because kinetic energy and VELOCITY are directly proportional. The Kinetic energy is 8000J KE = 2000 J mv²/2 = 2000 J When speed gets doubled., = m(2v)²/2 = 4mv²/2 = 4 * (mv²/2) = 4 * 2000 J = 8000 J |
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